[PATCH 4/4] quartz: Prevent heap corruption if IPropertyBag_Read fails.

[Alexander Dorofeyev]

If IPropertyBag_Read failed for some reason and didn't set variant's array, 
VariantClear that follows it was causing heap corruption. This situation 
wouldn't occur unless there's some buggy filter in the registry that doesn't 
have FilterData value (I accidentally created such situation when experimenting 
with filter registry keys), but I think it's better to avoid the heap corruption 
in such case nonetheless.

Depends on patch 3/4 to work.
---
  dlls/quartz/filtermapper.c |    1 -
  1 files changed, 0 insertions(+), 1 deletions(-)
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